You CAN use a cdma digitizer in the 4s models, there is only one tab that needs to be easily clipped off and one tab on corner that needs the hole slightly ovaled more with a dremel or just not put a screw in that one. (And I mean slightly, very little dremeling required)
Watch my video here.

Nice Video, thanks for the clear and detailed information. Especially regarding the corner tab difference. Could you also compare the CDMA (Verizon) back cover and the 4S back cover? Some say they are interchangeable and fit perfect, others say there are very slight differences?

You CAN use a cdma digitizer in the 4s models, there is only one tab that needs to be easily clipped off and one tab on corner that needs the hole slightly ovaled more with a dremel or just not put a screw in that one. (And I mean slightly, very little dremeling required)
Watch my video here.

I have an iphone 4s and noticed your video about the tabs. However, is this also true for GSM iphone 4s? I wanted to get a full conversion kit for my iphone 4s but only saw the housing for iphone 4 on ebay. I want to get the right parts, but all the listings does not specify whether the housing is for GSM or CMDA. Does the GSM iphone 4 digitizer housing have different tabs as the GSM iphone 4s digitizer housing?

LoL I am already working on this solution as well but I do not see replacement parts for the phone offered yet, and I do not know anybody with one yet. I will make a call to my nerd friends and see if they know the answer.

PS I have ordered cdma and a 4s back door they will arive soon, I heard that they will NOT interchange, BUT they said that about alot of apple products, I will see if a slight mod can make it work or if i can remove the back frame from the back glass, the back cover is glass on plastic and the glass is painted, so as long as it does not mar the paint you will not see the frame swap with double side sticky tape. (IN THEORY)

I have an iphone 4s and noticed your video about the tabs. However, is this also true for GSM iphone 4s? I wanted to get a full conversion kit for my iphone 4s but only saw the housing for iphone 4 on ebay. I want to get the right parts, but all the listings does not specify whether the housing is for GSM or CMDA. Does the GSM iphone 4 digitizer housing have different tabs as the GSM iphone 4s digitizer housing?

There you have it, Dee9299 says that the cdma will fit new 4s. I will post pics to verify. This is good news, it would be terrible if you needed 4 differnet back glasses for mods as well. The mid frames on all these are diff as well. so confusing LoL.

I know from personal experience, as well as iFixit has also confirmed it.

Just wanted to throw that out there.

I am actually not wrong. I have a cdma back on my 4S right. Also with a little work you can get a gsm back to fit. Also didn't ifixit also say the front display for the 4s was the same as the cdma one.....we know how that turned out.